title: [Long-term supraventricular tachycardia in a patient with triiodothyronine toxicosis].
abstract: There was presented a case of a therapy-resistant paroxysmal supraventricular tachycardia 130-140/min lasting about 100 days in a 21 years old barmaid drinking 5-6 glasses of natural coffee a day within last 3 years. Supraventricular tachycardia did not impair her working abilities; she was treated with propranolol within last 3 weeks before the admission to hospital. After 4 day therapy with 800 mg of quinidine, 10% potassium chloride and 75 mg of hydroxyzine performed electrocardioversion restored the sinus rhythm 90/min, but unfortunately supraventricular tachycardia returned 4 hours later. Thyroid hormones examination revealed isolated increase of serum T3 level to 3.0 ng/ml (normal value range 0.8-1, 6 ng/ml). Ultrasound examination showed mild parenchymatous goitre. Authors diagnosed a rare type of thyrotoxicosis-triiodothyronine toxicosis+, which was only manifested by long-lasting supraventricular tachycardia without clinical state impairment. Thiamazole-40 mg/day (60 mg from the 28th day of therapy), propranolol-160 mg/day as well as sedatives, 10% KCl and vitamins C and B6 were started to be given. After 72 days of treatment, when serum T3 level lowered to 2.35 ng/ml sinus rhythm 88/min returned, which was proved by 24 hour ECG Holter monitoring. The woman put on weight 10.5 kg during hospitalization and discharged from hospital to out-patient follow-up in good condition. Other authors emphasized that T3-Thyrotoxicosis did not clinically stray from the toxic multinodular or Graves-Basedow's goitre. Three year coffee overdosage deceived physicians at the start of therapy, because its abuse is a known factor inducing supraventricular tachycardia.(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: Zoddziału Kardiologicznego Wojewódzkiego Szpitala Zespolonego w Tarnowie.
authors.forename: S
authors.initials: S
authors.lastname: Słowiński
authors.forename: P
authors.initials: P
authors.lastname: Moszczyński
authors.forename: M
authors.initials: M
authors.lastname: Zabówka
mesh_terms: D000328:Adult; D004359:Drug Therapy, Combination; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008713:Methimazole / Q000627:therapeutic use; D011433:Propranolol / Q000627:therapeutic use; D013617:Tachycardia, Supraventricular / Q000175:diagnosis / Q000188:drug therapy / Q000209:etiology*; D013971:Thyrotoxicosis / Q000097:blood / Q000150:complications* / Q000188:drug therapy; D014284:Triiodothyronine / Q000037:antagonists & inhibitors / Q000097:blood*
chemical_list: D014284:Triiodothyronine; D008713:Methimazole; D011433:Propranolol
vernacular_title: Długotrwały czestoskurcz przedsionkowy u pacjentki z trójjodotyroninotoksykoza.